Results 11 to 20 of about 588 (212)

Research on high efficiency lapping process of cylindrical roller based on consolidated diamond abrasive tool

Jin'gangshi yu moliao moju gongcheng, 2021
To solve the problem of low efficiency in the high precision grinding process of cylindrical roller, on the basis of double plane eccentric disc polishing method, the lapping method of cylindrical roller based on diamond consolidated abrasive tool is ...
LEI Yang, YANG Xiaoguang, FENG Kaiping, ZHOU Zhaozhong, YUAN Julong   +4 more
doaj  

Experimental study on polishing process of cylindrical roller bearings

Measurement + Control, 2019
The surface quality and accuracy of the geometry of the cylindrical rollers are important factors for bearing life. This paper presents effects of machining parameters on the surface roughness, topography and roundness of cylindrical rollers through the ...
Duc Nam Nguyen, Ngoc Le Chau, Thanh-Phong Dao, Chander Prakash, Sunpreet Singh   +4 more
doaj   +1 more source

Finishing of Cylindrical Surfaces by Using Lapping Films.

Journal of the Japan Society for Precision Engineering, 1992
Many types of lapping films are manufactured today. This is because they greatly improve the finishing process and reduce the finishing costs. However, the effects of the structural characteristics of lapping films and the elastic contact conditions between contact roll and workpiece on the performance of finishing have not yet been fully explained. In
HIGUCHI, Shizuichi, AKAO, Shigeru, SAITO, Yoshio, HANAOKA, Tadaaki   +3 more
openaire   +2 more sources

Study on Precision Cylindrical Lapping : on the Condition for Modification of Roundness Error

Bulletin of JSME, 1983
This paper discusses analytically on the condition for modification of the work roundness error and improvement to the value of about 0.1 μm by a simple conventional cylindrical lapping method, considering that it has been very difficult to machine a cylindrical workpiece at its top position supported with two free rotating rollers. The analysis points
SHINMURA, Takeo, AIZAWA, Toshio
openaire   +2 more sources

Slip Localization Intensification Mediated by Grain Boundary Sliding in a Polycrystalline Nickel‐Based Superalloy

Advanced Engineering Materials, EarlyView.
The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat, D. Anjaria, I. Woo, C. Bean, D. Texier, J. C. Stinville   +5 more
wiley   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

Triple Junctions as Dislocation‐Like Defects: The Role of Grain Boundary Crystallography Revealed by Experiment and Atomistic Simulation

Advanced Engineering Materials, EarlyView.
Grain boundary triple junctions are an essential ingredient of the microstructure of polycrystalline materials. In this study, a triple junction is observed using atomic‐resolution scanning transmission electron microscopy and characterized. Computer simulations reveal that the junction has a dislocation character that is determined by the joining ...
Tobias Brink, Saba Saood, Peter Schweizer, Jörg Neugebauer, Gerhard Dehm   +4 more
wiley   +1 more source

External and Internal Cracking Caused by Heat Treatment in Laser Powder Bed Fusion‐Fabricated Inconel 738LC Components

Advanced Engineering Materials, EarlyView.
Manufacturing problems such as heat treatment‐induced cracking hinder the widespread application of the laser powder bed fusion (LPBF) process to superalloys. In this study, cracks in the LPBF components of Inconel 738LC superalloy are characterized after heat treatment at various temperature ranges, revealing two distinct cracking behaviors.
Kosuke Kuwabara, Masahiro Kusano, Ayako Ikeda, Toshio Osada, Makoto Watanabe   +4 more
wiley   +1 more source

High‐Temperature Phase Transformation in a V‐9Si‐6.5B Alloy: The Kinetic and Crystallographic Pathway From V5SiB2 to V8SiB4

Advanced Engineering Materials, EarlyView.
In situ synchrotron high‐energy X‐ray diffraction reveals the real‐time high‐temperature phase evolution of a ternary V‐9Si‐6.5B alloy. The study uncovers a kinetically delayed V5SiB2 → V8SiB4 transformation governed by massive structural and chemical barriers.
Zahra Sabeti, Andreas Stark, Roja Rani Korrayi, Florian Pyczak, Georg Hasemann   +4 more
wiley   +1 more source